Biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds.

今年早些时候，当生物学家们在海军的帮助下，成功追踪到一只特定的蓝鲸长达43天并监测它的声音的时候，生物学家们很高兴。

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There are various sites that let you keep track of particular habits which you’re trying to build on a regular basis.

有很多网站让你通过一些规律性的基础，让你掌握自己特定的习惯。

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Manages Position objects, which track a particular location within the text even as the text is modified.

管理Position对象。当文本内容被更改时，Position对象会跟踪文本中的特定位置。

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The vocals on this particular track are melodic and pleasant, but Perhapst sometimes suffers from Moen's insistence on playing with too many vocal styles.

NPR: Perhapst: 'Harbour'

These are all tickers for exchange-traded funds, fixed baskets of securities traded like stocks and intended to track a particular index or subindex.

FORBES: The Tax-Wise Dartboard

The supply-chain track, in particular, has generated enormous interest in the business community, where logistics has a growing influence on the bottom line.

ECONOMIST: News from the schools, April 2006